Magnatone amplifiers date back to the 1940s and ’50s – the era of Hawaiian-steel guitar – and boasted pearloid-covered casework befitting the silky, exotic post-war slide-vibrato sounds of the South Pacific. But they were truly set apart from the Fender-led pack with the introduction of their “true vibrato” circuitry (and proprietary “Varistor” control). Unlike tremolo …